基本上完全没有动用到15.3，因为48.13就可以解决掉了，
15.3只是RedBull的Arguments里面的其中一点。
48.13原文是这样
When the clerk of the course decides it is safe to call in the safety car
the message "SAFETY CAR IN THIS LAP" will be sent to all Competitors via
the official messaging system and the car's orange lights will be
extinguished. This will be the signal to the Competitors and drivers that
it will be entering the pit lane at the end of that lap.
"Will be"表示只要"Safety car in this lap"的讯息亮起，
safety car就必须要进pit lane了
用48.12来争也未必合理，因为48.12的重点应是在第一段
"If the clerk of the course considers it safe to do so, and the message
'lapped cars may now overtake' has been sent to all competitors via the
official messaging system, any cars that have been lapped by the leader
will be required to pass the cars on the lead lap and the safety car."
Merc觉得有争议的一段，原文是这样
Unless the clerk of the course considers the presence of the safety car
is still necessary, once the last lapped car has passed the leader the
safety car will return to the pits at the end of the following lap.
这段的意思是在说Clerk有权力去判断场上是否安全，否则可以把safety car留在场上，
重点并不是套圈车过了还要过一圈safety car才可以进去。
所以基本上这条是为了让套圈车超过安全车而存在的。
不是在说safety car要带完多少圈才能进pit lane。
就很像棒球规则啦，好球带规则是
the area over home plate from the midpoint between a batter's shoulders
and the top of the uniform pants